/* BGP try to connect to the peer. */
int
bgp_connect (struct peer *peer)
{
unsigned int ifindex = 0;
/* Make socket for the peer. */
peer->fd = sockunion_socket (&peer->su);
if (peer->fd < 0)
return -1;
set_nonblocking (peer->fd);
/* Set socket send buffer size */
bgp_update_sock_send_buffer_size(peer->fd);
bgp_set_socket_ttl (peer, peer->fd);
sockopt_reuseaddr (peer->fd);
sockopt_reuseport (peer->fd);
#ifdef IPTOS_PREC_INTERNETCONTROL
if (bgpd_privs.change (ZPRIVS_RAISE))
zlog_err ("%s: could not raise privs", __func__);
if (sockunion_family (&peer->su) == AF_INET)
setsockopt_ipv4_tos (peer->fd, IPTOS_PREC_INTERNETCONTROL);
# ifdef HAVE_IPV6
else if (sockunion_family (&peer->su) == AF_INET6)
setsockopt_ipv6_tclass (peer->fd, IPTOS_PREC_INTERNETCONTROL);
# endif
if (bgpd_privs.change (ZPRIVS_LOWER))
zlog_err ("%s: could not lower privs", __func__);
#endif
if (peer->password)
bgp_md5_set_connect (peer->fd, &peer->su, peer->password);
/* Bind socket. */
bgp_bind (peer);
/* Update source bind. */
bgp_update_source (peer);
#ifdef HAVE_IPV6
if (peer->ifname)
ifindex = if_nametoindex (peer->ifname);
#endif /* HAVE_IPV6 */
if (BGP_DEBUG (events, EVENTS))
plog_debug (peer->log, "%s [Event] Connect start to %s fd %d",
peer->host, peer->host, peer->fd);
/* Connect to the remote peer. */
return sockunion_connect (peer->fd, &peer->su, htons (peer->port), ifindex);
}
/* BGP try to connect to the peer. */
int
bgp_connect (struct peer *peer)
{
unsigned int ifindex = 0;
/* Make socket for the peer. */
peer->fd = sockunion_socket (&peer->su);
if (peer->fd < 0)
return -1;
/* If we can get socket for the peer, adjest TTL and make connection. */
if (peer->sort == BGP_PEER_EBGP) {
sockopt_ttl (peer->su.sa.sa_family, peer->fd, peer->ttl);
if (peer->gtsm_hops)
sockopt_minttl (peer->su.sa.sa_family, peer->fd, MAXTTL + 1 - peer->gtsm_hops);
}
sockopt_reuseaddr (peer->fd);
sockopt_reuseport (peer->fd);
#ifdef IPTOS_PREC_INTERNETCONTROL
if (bgpd_privs.change (ZPRIVS_RAISE))
zlog_err ("%s: could not raise privs", __func__);
if (sockunion_family (&peer->su) == AF_INET)
setsockopt_ipv4_tos (peer->fd, IPTOS_PREC_INTERNETCONTROL);
# ifdef HAVE_IPV6
else if (sockunion_family (&peer->su) == AF_INET6)
setsockopt_ipv6_tclass (peer->fd, IPTOS_PREC_INTERNETCONTROL);
# endif
if (bgpd_privs.change (ZPRIVS_LOWER))
zlog_err ("%s: could not lower privs", __func__);
#endif
if (peer->password)
bgp_md5_set_connect (peer->fd, &peer->su, peer->password);
/* Bind socket. */
bgp_bind (peer);
/* Update source bind. */
bgp_update_source (peer);
#ifdef HAVE_IPV6
if (peer->ifname)
ifindex = if_nametoindex (peer->ifname);
#endif /* HAVE_IPV6 */
if (BGP_DEBUG (events, EVENTS))
plog_debug (peer->log, "%s [Event] Connect start to %s fd %d",
peer->host, peer->host, peer->fd);
/* Connect to the remote peer. */
return sockunion_connect (peer->fd, &peer->su, htons (peer->port), ifindex);
}
/* BGP try to connect to the peer. */
int
bgp_connect (struct peer *peer)
{
unsigned int ifindex = 0;
/* Make socket for the peer. */
peer->fd = sockunion_socket (&peer->su);
if (peer->fd < 0)
return -1;
/* If we can get socket for the peer, adjest TTL and make connection. */
if (peer_sort (peer) == BGP_PEER_EBGP)
sockopt_ttl (peer->su.sa.sa_family, peer->fd, peer->ttl);
sockopt_reuseaddr (peer->fd);
sockopt_reuseport (peer->fd);
/* Bind socket. */
bgp_bind (peer);
/* Update source bind. */
bgp_update_source (peer);
#ifdef HAVE_IPV6
if (peer->ifname)
ifindex = if_nametoindex (peer->ifname);
#endif /* HAVE_IPV6 */
if (BGP_DEBUG (events, EVENTS))
plog_info (peer->log, "%s [Event] Connect start to %s fd %d",
peer->host, peer->host, peer->fd);
#ifdef HAVE_TCP_SIGNATURE
if (CHECK_FLAG (peer->flags, PEER_FLAG_PASSWORD))
bgp_tcpsig_set (peer->fd, peer);
#endif /* HAVE_TCP_SIGNATURE */
/* Connect to the remote peer. */
return sockunion_connect (peer->fd, &peer->su, htons (peer->port), ifindex);
}
/* BGP try to connect to the peer. */
int bgp_connect(struct peer *peer)
{
assert(!CHECK_FLAG(peer->thread_flags, PEER_THREAD_WRITES_ON));
assert(!CHECK_FLAG(peer->thread_flags, PEER_THREAD_READS_ON));
ifindex_t ifindex = 0;
if (peer->conf_if && BGP_PEER_SU_UNSPEC(peer)) {
zlog_debug("Peer address not learnt: Returning from connect");
return 0;
}
frr_elevate_privs(&bgpd_privs) {
/* Make socket for the peer. */
peer->fd = vrf_sockunion_socket(&peer->su, peer->bgp->vrf_id,
bgp_get_bound_name(peer));
}
if (peer->fd < 0)
return -1;
set_nonblocking(peer->fd);
/* Set socket send buffer size */
setsockopt_so_sendbuf(peer->fd, BGP_SOCKET_SNDBUF_SIZE);
if (bgp_set_socket_ttl(peer, peer->fd) < 0)
return -1;
sockopt_reuseaddr(peer->fd);
sockopt_reuseport(peer->fd);
#ifdef IPTOS_PREC_INTERNETCONTROL
frr_elevate_privs(&bgpd_privs) {
if (sockunion_family(&peer->su) == AF_INET)
setsockopt_ipv4_tos(peer->fd,
IPTOS_PREC_INTERNETCONTROL);
else if (sockunion_family(&peer->su) == AF_INET6)
setsockopt_ipv6_tclass(peer->fd,
IPTOS_PREC_INTERNETCONTROL);
}
#endif
if (peer->password) {
uint16_t prefixlen = peer->su.sa.sa_family == AF_INET
? IPV4_MAX_PREFIXLEN
: IPV6_MAX_PREFIXLEN;
bgp_md5_set_connect(peer->fd, &peer->su, prefixlen,
peer->password);
}
/* Update source bind. */
if (bgp_update_source(peer) < 0) {
return connect_error;
}
if (peer->conf_if || peer->ifname)
ifindex = ifname2ifindex(peer->conf_if ? peer->conf_if
: peer->ifname,
peer->bgp->vrf_id);
if (bgp_debug_neighbor_events(peer))
zlog_debug("%s [Event] Connect start to %s fd %d", peer->host,
peer->host, peer->fd);
/* Connect to the remote peer. */
return sockunion_connect(peer->fd, &peer->su, htons(peer->port),
ifindex);
}
